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   <div id="projectname">gbmath
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   <div id="projectbrief">c++ math library</div>
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<div class="title">target_camera.h</div>  </div>
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<a href="target__camera_8h.html">Go to the documentation of this file.</a><div class="fragment"><div class="line"><a name="l00001"></a><span class="lineno">    1</span>&#160;</div>
<div class="line"><a name="l00006"></a><span class="lineno">    6</span>&#160;<span class="preprocessor">#pragma once</span></div>
<div class="line"><a name="l00007"></a><span class="lineno">    7</span>&#160;<span class="preprocessor"></span></div>
<div class="line"><a name="l00008"></a><span class="lineno">    8</span>&#160;<span class="keyword">namespace </span>gbmath</div>
<div class="line"><a name="l00009"></a><span class="lineno">    9</span>&#160;{</div>
<div class="line"><a name="l00010"></a><span class="lineno">   10</span>&#160;</div>
<div class="line"><a name="l00012"></a><span class="lineno"><a class="code" href="classgbmath_1_1_target_camera.html">   12</a></span>&#160;    <span class="keyword">class </span><a class="code" href="classgbmath_1_1_target_camera.html" title="The target chamber, which can be set objective observation. ">TargetCamera</a> {</div>
<div class="line"><a name="l00013"></a><span class="lineno">   13</span>&#160;    <span class="keyword">public</span>:</div>
<div class="line"><a name="l00014"></a><span class="lineno">   14</span>&#160;</div>
<div class="line"><a name="l00015"></a><span class="lineno"><a class="code" href="classgbmath_1_1_target_camera.html#a529fcd941f8ef071e5c9cd3745f57869">   15</a></span>&#160;        <a class="code" href="classgbmath_1_1_target_camera.html#a529fcd941f8ef071e5c9cd3745f57869">TargetCamera</a>() </div>
<div class="line"><a name="l00016"></a><span class="lineno">   16</span>&#160;        { </div>
<div class="line"><a name="l00017"></a><span class="lineno">   17</span>&#160;            <a class="code" href="classgbmath_1_1_target_camera.html#a855d8379c2d449c5a2c29fe5d4231f5e" title="pointer to target coord ">m_pvTarget</a>=NULL; <a class="code" href="classgbmath_1_1_target_camera.html#a8d5d2f822b89725cb1529940944e8f28">m_bNeedUpdateView</a>=<span class="keyword">true</span>; </div>
<div class="line"><a name="l00018"></a><span class="lineno">   18</span>&#160;            <a class="code" href="classgbmath_1_1_target_camera.html#ad7ea44703d2a760ee2a912d5fae05aa2">m_vEyePt</a> = <a class="code" href="structgbmath_1_1vec3.html" title="3d-base vector. Corrected by operators epislon ">vec3</a>(5.0f , 0.0f , -0.0f);</div>
<div class="line"><a name="l00019"></a><span class="lineno">   19</span>&#160;            <a class="code" href="classgbmath_1_1_target_camera.html#a81ced723cccab17366740c023dd455f1">m_vUp</a>   = <a class="code" href="structgbmath_1_1vec3.html" title="3d-base vector. Corrected by operators epislon ">vec3</a>( 0.0f , 1.0f , 0.0f );</div>
<div class="line"><a name="l00020"></a><span class="lineno">   20</span>&#160;        }</div>
<div class="line"><a name="l00021"></a><span class="lineno">   21</span>&#160;</div>
<div class="line"><a name="l00023"></a><span class="lineno"><a class="code" href="classgbmath_1_1_target_camera.html#abd03893e47baea56f864f4c3829d6c37">   23</a></span>&#160;     <span class="keywordtype">void</span> <a class="code" href="classgbmath_1_1_target_camera.html#abd03893e47baea56f864f4c3829d6c37" title="Set a target cell, or NULL if no goal. ">setViewTarget</a>( <a class="code" href="structgbmath_1_1vec3.html" title="3d-base vector. Corrected by operators epislon ">vec3</a>* pvTarget ) </div>
<div class="line"><a name="l00024"></a><span class="lineno">   24</span>&#160;     { </div>
<div class="line"><a name="l00025"></a><span class="lineno">   25</span>&#160;         <a class="code" href="classgbmath_1_1_target_camera.html#a855d8379c2d449c5a2c29fe5d4231f5e" title="pointer to target coord ">m_pvTarget</a>=pvTarget; </div>
<div class="line"><a name="l00026"></a><span class="lineno">   26</span>&#160;         <a class="code" href="classgbmath_1_1_target_camera.html#a8d5d2f822b89725cb1529940944e8f28">m_bNeedUpdateView</a>=<span class="keyword">true</span>; </div>
<div class="line"><a name="l00027"></a><span class="lineno">   27</span>&#160;     }</div>
<div class="line"><a name="l00028"></a><span class="lineno">   28</span>&#160;     </div>
<div class="line"><a name="l00029"></a><span class="lineno"><a class="code" href="classgbmath_1_1_target_camera.html#adb9ed58172c9949c0870cc8a55b133f5">   29</a></span>&#160;     <span class="keywordtype">void</span> <a class="code" href="classgbmath_1_1_target_camera.html#adb9ed58172c9949c0870cc8a55b133f5">setViewPosition</a>( <span class="keyword">const</span> <a class="code" href="structgbmath_1_1vec3.html" title="3d-base vector. Corrected by operators epislon ">vec3</a>&amp; vPos )</div>
<div class="line"><a name="l00030"></a><span class="lineno">   30</span>&#160;     { </div>
<div class="line"><a name="l00031"></a><span class="lineno">   31</span>&#160;         <a class="code" href="classgbmath_1_1_target_camera.html#ad7ea44703d2a760ee2a912d5fae05aa2">m_vEyePt</a>=vPos; </div>
<div class="line"><a name="l00032"></a><span class="lineno">   32</span>&#160;         <a class="code" href="classgbmath_1_1_target_camera.html#a8d5d2f822b89725cb1529940944e8f28">m_bNeedUpdateView</a>=<span class="keyword">true</span>; </div>
<div class="line"><a name="l00033"></a><span class="lineno">   33</span>&#160;     }</div>
<div class="line"><a name="l00034"></a><span class="lineno">   34</span>&#160;</div>
<div class="line"><a name="l00035"></a><span class="lineno"><a class="code" href="classgbmath_1_1_target_camera.html#ac4f9c65afda89ae26b0ae95a22d46fae">   35</a></span>&#160;     <span class="keywordtype">void</span> <a class="code" href="classgbmath_1_1_target_camera.html#ac4f9c65afda89ae26b0ae95a22d46fae">setViewUp</a>( <span class="keyword">const</span> <a class="code" href="structgbmath_1_1vec3.html" title="3d-base vector. Corrected by operators epislon ">vec3</a>&amp; vUp ) </div>
<div class="line"><a name="l00036"></a><span class="lineno">   36</span>&#160;     { </div>
<div class="line"><a name="l00037"></a><span class="lineno">   37</span>&#160;         <a class="code" href="classgbmath_1_1_target_camera.html#a81ced723cccab17366740c023dd455f1">m_vUp</a>=vUp; </div>
<div class="line"><a name="l00038"></a><span class="lineno">   38</span>&#160;         <a class="code" href="classgbmath_1_1_target_camera.html#a8d5d2f822b89725cb1529940944e8f28">m_bNeedUpdateView</a>=<span class="keyword">true</span>; </div>
<div class="line"><a name="l00039"></a><span class="lineno">   39</span>&#160;     }</div>
<div class="line"><a name="l00040"></a><span class="lineno">   40</span>&#160;</div>
<div class="line"><a name="l00041"></a><span class="lineno"><a class="code" href="classgbmath_1_1_target_camera.html#a17ec905b3c2e9e643d8147e188895fb0">   41</a></span>&#160;     <span class="keywordtype">void</span> <a class="code" href="classgbmath_1_1_target_camera.html#a17ec905b3c2e9e643d8147e188895fb0">setProjParams</a>( <span class="keywordtype">float</span> fFOV, <span class="keywordtype">float</span> fAspect, <span class="keywordtype">float</span> fNearPlane, <span class="keywordtype">float</span> fFarPlane )</div>
<div class="line"><a name="l00042"></a><span class="lineno">   42</span>&#160;     {</div>
<div class="line"><a name="l00043"></a><span class="lineno">   43</span>&#160;       <span class="comment">//D 3DX MatrixPerspectiveFovLH(m_mProj, fFOV, fAspect, fNearPlane, fFarPlane );</span></div>
<div class="line"><a name="l00044"></a><span class="lineno">   44</span>&#160;        <a class="code" href="classgbmath_1_1_target_camera.html#a07b386ac49f6d953427d4349ee61de48" title="Projection matrix. ">m_mProj</a>.<a class="code" href="structgbmath_1_1mat44.html#a9b50c575bd5a266bf61946a013414a22">setPerspectiveFovLH</a>( fFOV, fAspect, fNearPlane, fFarPlane );</div>
<div class="line"><a name="l00045"></a><span class="lineno">   45</span>&#160;</div>
<div class="line"><a name="l00046"></a><span class="lineno">   46</span>&#160;     }</div>
<div class="line"><a name="l00047"></a><span class="lineno">   47</span>&#160;</div>
<div class="line"><a name="l00048"></a><span class="lineno"><a class="code" href="classgbmath_1_1_target_camera.html#a8463450831422155bd495e6c16d11e7a">   48</a></span>&#160;           <a class="code" href="structgbmath_1_1mat44.html" title="matrix 4x4. ">mat44</a>&amp; <a class="code" href="classgbmath_1_1_target_camera.html#a8463450831422155bd495e6c16d11e7a">getViewMatrix</a>()       { <span class="keywordflow">return</span> <a class="code" href="classgbmath_1_1_target_camera.html#a32dfb4d95a256594e24fa22af60235fe" title="View matrix. ">m_mView</a>; }</div>
<div class="line"><a name="l00049"></a><span class="lineno"><a class="code" href="classgbmath_1_1_target_camera.html#aa05558ddeafac9fc04e1a485b0597476">   49</a></span>&#160;     <span class="keyword">const</span> <a class="code" href="structgbmath_1_1mat44.html" title="matrix 4x4. ">mat44</a>&amp; <a class="code" href="classgbmath_1_1_target_camera.html#aa05558ddeafac9fc04e1a485b0597476">getViewMatrix</a>()<span class="keyword"> const </span>{ <span class="keywordflow">return</span> <a class="code" href="classgbmath_1_1_target_camera.html#a32dfb4d95a256594e24fa22af60235fe" title="View matrix. ">m_mView</a>; }</div>
<div class="line"><a name="l00050"></a><span class="lineno">   50</span>&#160;</div>
<div class="line"><a name="l00051"></a><span class="lineno"><a class="code" href="classgbmath_1_1_target_camera.html#a032d838cb2c4aab45688c674183c98e5">   51</a></span>&#160;           <a class="code" href="structgbmath_1_1mat44.html" title="matrix 4x4. ">mat44</a>&amp; <a class="code" href="classgbmath_1_1_target_camera.html#a032d838cb2c4aab45688c674183c98e5">getProjMatrix</a>()       { <span class="keywordflow">return</span> <a class="code" href="classgbmath_1_1_target_camera.html#a07b386ac49f6d953427d4349ee61de48" title="Projection matrix. ">m_mProj</a>; }</div>
<div class="line"><a name="l00052"></a><span class="lineno"><a class="code" href="classgbmath_1_1_target_camera.html#ab95ac75d83ed77922ed7b7e8640e3ed7">   52</a></span>&#160;     <span class="keyword">const</span> <a class="code" href="structgbmath_1_1mat44.html" title="matrix 4x4. ">mat44</a>&amp; <a class="code" href="classgbmath_1_1_target_camera.html#ab95ac75d83ed77922ed7b7e8640e3ed7">getProjMatrix</a>()<span class="keyword"> const </span>{ <span class="keywordflow">return</span> <a class="code" href="classgbmath_1_1_target_camera.html#a07b386ac49f6d953427d4349ee61de48" title="Projection matrix. ">m_mProj</a>; }</div>
<div class="line"><a name="l00053"></a><span class="lineno">   53</span>&#160;</div>
<div class="line"><a name="l00055"></a><span class="lineno"><a class="code" href="classgbmath_1_1_target_camera.html#af405a2a5f24646d5ccc0ead0133a8f7f">   55</a></span>&#160;     <span class="keywordtype">void</span> <a class="code" href="classgbmath_1_1_target_camera.html#af405a2a5f24646d5ccc0ead0133a8f7f" title="Update. Call before rendering the frame. Or more, if the target has moved. ">updateView</a>(<span class="keywordtype">float</span> fTime) </div>
<div class="line"><a name="l00056"></a><span class="lineno">   56</span>&#160;     {</div>
<div class="line"><a name="l00057"></a><span class="lineno">   57</span>&#160;         <span class="comment">// make view matrix</span></div>
<div class="line"><a name="l00058"></a><span class="lineno">   58</span>&#160;         <a class="code" href="structgbmath_1_1vec3.html" title="3d-base vector. Corrected by operators epislon ">vec3</a> vLookAt;</div>
<div class="line"><a name="l00059"></a><span class="lineno">   59</span>&#160;         <span class="keywordflow">if</span>(<a class="code" href="classgbmath_1_1_target_camera.html#a855d8379c2d449c5a2c29fe5d4231f5e" title="pointer to target coord ">m_pvTarget</a>) </div>
<div class="line"><a name="l00060"></a><span class="lineno">   60</span>&#160;         { </div>
<div class="line"><a name="l00061"></a><span class="lineno">   61</span>&#160;             vLookAt = *<a class="code" href="classgbmath_1_1_target_camera.html#a855d8379c2d449c5a2c29fe5d4231f5e" title="pointer to target coord ">m_pvTarget</a>;  </div>
<div class="line"><a name="l00062"></a><span class="lineno">   62</span>&#160;         }</div>
<div class="line"><a name="l00063"></a><span class="lineno">   63</span>&#160;         <span class="keywordflow">else</span></div>
<div class="line"><a name="l00064"></a><span class="lineno">   64</span>&#160;         {</div>
<div class="line"><a name="l00065"></a><span class="lineno">   65</span>&#160;             vLookAt.<a class="code" href="structgbmath_1_1vec3.html#a5fb2cf8734338da1ad7b4251a3bde292">x</a> = vLookAt.<a class="code" href="structgbmath_1_1vec3.html#aa096d36a3c46c4224f0195f70eb580ec">y</a> = vLookAt.<a class="code" href="structgbmath_1_1vec3.html#a546e6c38e7c49102f064d130ed3475ee">z</a> = 0.0f;</div>
<div class="line"><a name="l00066"></a><span class="lineno">   66</span>&#160;         }</div>
<div class="line"><a name="l00067"></a><span class="lineno">   67</span>&#160;</div>
<div class="line"><a name="l00068"></a><span class="lineno">   68</span>&#160;        <span class="comment">// D 3DX MatrixLookAtLH( m_mView, m_vEyePt, vLookAt, m_vUp );</span></div>
<div class="line"><a name="l00069"></a><span class="lineno">   69</span>&#160;         <a class="code" href="classgbmath_1_1_target_camera.html#a32dfb4d95a256594e24fa22af60235fe" title="View matrix. ">m_mView</a>.<a class="code" href="structgbmath_1_1mat44.html#a93273d8a93456c81c6f884a955a8b333">setViewLookAtLH</a>( <a class="code" href="classgbmath_1_1_target_camera.html#ad7ea44703d2a760ee2a912d5fae05aa2">m_vEyePt</a>, vLookAt, <a class="code" href="classgbmath_1_1_target_camera.html#a81ced723cccab17366740c023dd455f1">m_vUp</a>  );</div>
<div class="line"><a name="l00070"></a><span class="lineno">   70</span>&#160;</div>
<div class="line"><a name="l00071"></a><span class="lineno">   71</span>&#160;        <a class="code" href="classgbmath_1_1_target_camera.html#a8d5d2f822b89725cb1529940944e8f28">m_bNeedUpdateView</a> = <span class="keyword">false</span>;</div>
<div class="line"><a name="l00072"></a><span class="lineno">   72</span>&#160;     }</div>
<div class="line"><a name="l00073"></a><span class="lineno">   73</span>&#160;</div>
<div class="line"><a name="l00074"></a><span class="lineno">   74</span>&#160;</div>
<div class="line"><a name="l00075"></a><span class="lineno">   75</span>&#160;    <span class="keyword">private</span>:</div>
<div class="line"><a name="l00076"></a><span class="lineno"><a class="code" href="classgbmath_1_1_target_camera.html#a855d8379c2d449c5a2c29fe5d4231f5e">   76</a></span>&#160;        <a class="code" href="structgbmath_1_1vec3.html" title="3d-base vector. Corrected by operators epislon ">vec3</a>*     <a class="code" href="classgbmath_1_1_target_camera.html#a855d8379c2d449c5a2c29fe5d4231f5e" title="pointer to target coord ">m_pvTarget</a>; </div>
<div class="line"><a name="l00077"></a><span class="lineno"><a class="code" href="classgbmath_1_1_target_camera.html#a32dfb4d95a256594e24fa22af60235fe">   77</a></span>&#160;        <a class="code" href="structgbmath_1_1mat44.html" title="matrix 4x4. ">mat44</a>     <a class="code" href="classgbmath_1_1_target_camera.html#a32dfb4d95a256594e24fa22af60235fe" title="View matrix. ">m_mView</a>;  </div>
<div class="line"><a name="l00078"></a><span class="lineno"><a class="code" href="classgbmath_1_1_target_camera.html#a07b386ac49f6d953427d4349ee61de48">   78</a></span>&#160;        <a class="code" href="structgbmath_1_1mat44.html" title="matrix 4x4. ">mat44</a>     <a class="code" href="classgbmath_1_1_target_camera.html#a07b386ac49f6d953427d4349ee61de48" title="Projection matrix. ">m_mProj</a>;  </div>
<div class="line"><a name="l00079"></a><span class="lineno">   79</span>&#160;</div>
<div class="line"><a name="l00080"></a><span class="lineno"><a class="code" href="classgbmath_1_1_target_camera.html#ad7ea44703d2a760ee2a912d5fae05aa2">   80</a></span>&#160;        <a class="code" href="structgbmath_1_1vec3.html" title="3d-base vector. Corrected by operators epislon ">vec3</a>  <a class="code" href="classgbmath_1_1_target_camera.html#ad7ea44703d2a760ee2a912d5fae05aa2">m_vEyePt</a>;</div>
<div class="line"><a name="l00081"></a><span class="lineno"><a class="code" href="classgbmath_1_1_target_camera.html#a81ced723cccab17366740c023dd455f1">   81</a></span>&#160;        <a class="code" href="structgbmath_1_1vec3.html" title="3d-base vector. Corrected by operators epislon ">vec3</a>  <a class="code" href="classgbmath_1_1_target_camera.html#a81ced723cccab17366740c023dd455f1">m_vUp</a>;</div>
<div class="line"><a name="l00082"></a><span class="lineno">   82</span>&#160;</div>
<div class="line"><a name="l00083"></a><span class="lineno"><a class="code" href="classgbmath_1_1_target_camera.html#a8d5d2f822b89725cb1529940944e8f28">   83</a></span>&#160;        <span class="keywordtype">bool</span> <a class="code" href="classgbmath_1_1_target_camera.html#a8d5d2f822b89725cb1529940944e8f28">m_bNeedUpdateView</a>;</div>
<div class="line"><a name="l00084"></a><span class="lineno">   84</span>&#160;    };</div>
<div class="line"><a name="l00085"></a><span class="lineno">   85</span>&#160;</div>
<div class="line"><a name="l00086"></a><span class="lineno">   86</span>&#160;</div>
<div class="line"><a name="l00087"></a><span class="lineno">   87</span>&#160;}</div>
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